DupKiller — Remove Duplicate Photos, Music & Docs in Minutes
What it does
DupKiller scans storage to find duplicate and near-duplicate files across photos, music, documents, and videos, then helps you remove or consolidate them to free space and reduce clutter.
Key features
- Fast scanning: Uses multi-threading and incremental indexing to scan large drives quickly.
- Smart matching: Compares files by content hash (MD5/SHA) and optional perceptual hashes for images and audio fingerprinting for music to detect near-duplicates.
- Filterable results: Grouped duplicate sets with filters by file type, size, date, and location.
- Preview & compare: Side-by-side previews for images, waveform/metadata view for audio, and text diff for documents.
- Safe deletion: Move-to-recycle-bin option, automatic keep-rules (newest, largest, location-based), and optional backups before removal.
- Batch actions & scheduling: Select, auto-select, and schedule regular scans and cleanups.
- Cross-platform support: Versions for Windows, macOS, and Linux (or web-based client with local agent).
- Integration: Cloud drive scanning (Google Drive, OneDrive), external drives, and NAS compatibility.
Typical workflow
- Choose folders, drives, or cloud accounts to scan.
- Set matching sensitivity and rules for what to keep.
- Run scan (incremental or full).
- Review grouped results, preview items, and adjust selections.
- Apply actions (delete, move, replace with hardlink) and optionally create backup.
Benefits
- Frees storage space quickly.
- Reduces backup size and sync conflicts.
- Makes media libraries and document collections easier to manage and search.
Risks & precautions
- False positives with files that are intentionally similar (edited versions, different resolutions).
- Always review before permanent deletion; use backups or recycle bin option.
Best for
Users with large photo/music libraries, shared storage/NAS admins, and anyone needing periodic cleanup to reclaim disk space.
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